internal DataQuery(DataCollection collection, string id)
{
_collection = collection;
_id = id;
_filters = null;
_selectors = null;
_sort = null;
_skip = null;
_take = null;
}
private void LoadDataCollections()
{
string dataPath = Path.Join(_app.Options.Path, "data");
// TODO: Also check if its a directory
if (FileSystem.ExistsSync(dataPath) == false) {
Runtime.TraceWarning("Data directory '%s' was not found. No data collections were loaded.", dataPath);
return;
}
foreach (string name in FileSystem.ReadDirectorySync(dataPath)) {
string collectionPath = Path.Join(dataPath, name);
string collectionConfigPath = Path.Join(collectionPath, "config.json");
Dictionary<string, object> collectionConfig = Configuration.Load(collectionConfigPath, /* createEmptyIfNeeded */ false);
if (collectionConfig != null) {
string sourceName = (string)collectionConfig["source"];
DataSource source = _dataSources[sourceName];
if (source != null) {
_dataCollections[name] = new DataCollection(name, collectionPath, collectionConfig, source);
Runtime.TraceInfo("Created data collection '%s' associated with data source named '%s'.", name, sourceName);
}
else {
Runtime.Abort("Unable to find a data source named '%s' for '%s' data collection.", sourceName, name);
}
}
else {
Runtime.TraceError("Configuration not found in data collection directory named '%s'. Ignoring.", name);
}
}
}
private Task<ServerResponse> ExecuteRequest(DataCollection collection, DataRequest request)
{
Deferred<ServerResponse> deferred = Deferred.Create<ServerResponse>();
Task<object> resultTask = collection.ExecuteRequest(request);
resultTask.Done(delegate(object result) {
deferred.Resolve(CreateServerResponse(request, result));
})
.Fail(delegate(Exception e) {
deferred.Resolve(ServerResponse.CreateServerError(e.Message));
});
return deferred.Task;
}
private DataRequest CreateDataRequest(ServerRequest serverRequest, DataCollection collection)
{
DataOperation operation;
string id = serverRequest.UrlData.Query["id"];
string partition = serverRequest.UrlData.Query["partition"];
string operationName = serverRequest.Route.Parameters["operationName"];
switch (serverRequest.HttpRequest.Method) {
case HttpVerb.GET:
if (String.IsNullOrEmpty(id) == false) {
operation = DataOperation.Lookup;
}
else {
operation = DataOperation.Query;
}
break;
case HttpVerb.POST:
if (String.IsNullOrEmpty(operationName)) {
operation = DataOperation.Update;
}
else {
operation = DataOperation.Execute;
}
break;
case HttpVerb.PUT:
operation = DataOperation.Insert;
break;
case HttpVerb.DELETE:
operation = DataOperation.Delete_;
break;
default:
return null;
}
DataRequest dataRequest = new DataRequest(operation, operationName, serverRequest.UrlData.Query);
dataRequest.Query = new DataQuery(collection, id);
dataRequest.Partition = partition;
return dataRequest;
}
